Ok, so I am learning something from a book, this book is over 900 pages, and so the only way I will ever be able to understand it all, and or use the book knowledge is if I can easily look it up in the book when need to. However, because this book is so big, I am taking notes from every chapter so summarize the entire book, well by the time my notes are done it will be just barely under 100 pages. It is so many pages of notes that I have made the decision to make my own book. I have already been given permission by the author to do so. Everyone here did this happen to anyone else in their life? Say like if they wanted to learn something from a big book of many pages, and the only way to do so was to the point of basically replacing the book entirely with notes that are enough to make a book on their own?